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JJG 646-2006: Verification Regulation of Locomotive Pipette Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid JJG 646: Historical versions
Similar standardsJJG 646-2006: Verification Regulation of Locomotive Pipette---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JJG646-2006JJG National Metrological Verification Regulation of the People's Republic of China Locomotive Pipette Issued on. DECEMBER 08, 2006 Implemented on. JUNE 08, 2007 Issued by. The State Administration of Quality Supervision, Inspection and Quarantine This Regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China on December 8, 2006 and was implemented on June 8, 2007. Jurisdiction organization. National Technical Committee of Flow Capacity Measurement Main drafting organization. National Institute of Metrology Participating organization. Shanghai Institute of Measurement and Testing Technology National Technical Committee of Flow Capacity Measurement is responsible for the interpretation of this Regulation Main drafter of this Regulation. Verification Regulation of Locomotive Pipette replacing JJG 646-1990 Zhang Long (National Institute of Metrology Science) Participating drafters. Tong Lin (National Institute of Metrology Science) Bao Xuesong (National Institute of Metrology Science) Zhang Hongya (Shanghai Institute of Measurement and Metrology Technology) Table of Contents1 Scope... 5 2 Cited reference... 5 3 Terms and measurement units... 5 4 Overview... 6 5 Metrological properties requirements... 6 6 General technical requirements... 8 6.1 Appearance requirements... 8 6.2 Piston... 8 6.3 Regulator... 8 6.4 Aspirating-nozzle... 8 6.5 Air-tightness... 8 6 Metrological measuring tool control... 8 7.1 Verification conditions... 8 7.2 Verification items... 9 7.3 Verification method... 9 7.4 Verification results processing... 13 7.5 Verification period... 13 Annex A Schematic diagrams for various locomotive pipettes... 14 Annex B K(t) value table... 17 Annex C Recording format of locomotive pipette verification... 18 Verification Regulation of Locomotive Pipette1 ScopeThis Regulation applies to the initial verification, subsequent verification and in-service inspection of locomotive pipette.2 Cited referenceThis Regulation cites the following document. GB 6682-1992 Water for analytical laboratory use – Specification and test methods Pay attention to use the current valid version of the above cited reference in using this Regulation.3 Terms and measurement units3.1 Locomotive pipette Measuring instrument with a certain scale range that can suck the liquid from container and transfer it into another container (Filling injector, sample-filling storage, aspirator etc. collectively referred to as locomotive pipettes). 3.2 Adjustable locomotive pipette Locomotive pipette whose volume value can be adjusted. 3.3 Quantitative locomotive pipette Locomotive pipette with single volume value. 3.4 Aspirating-nozzle The part installed on the lower end of locomotive pipette and used to suck and discharge liquid. 3.5 Display window The window on locomotive pipette displaying volume value. 3.6 Suction tube The connecting member between locomotive pipette and aspirating-nozzle.4 OverviewLocomotive pipettes are mainly used in environmental protection, medicine, food and health research department, and other departments to sample liquid or add liquid in biochemical analysis and assays. It is a piston pipette working with the principle of air discharge and determining the volume of the locomotive pipette through the moving distance of piston in piston sleeve.5 Metrological properties requirementsAt the standard temperature 20°C, the volume permissible tolerance and measurement repeatability of the locomotive pipette shall meet the requirements in Table 1.6 General technical requirements6.1 Appearance requirements 6.2 Piston The piston of locomotive pipette shall be able to move up and down flexibly with clear sub- block boundaries when being pressed. 6.3 Regulator The display window of locomotive pipette shall be flexible in rotation with clear and complete indicating numbers in the action of regulating volume. 6.4 Aspirating-nozzle 6.5 Air-tightness Under 0.04 MPa, the locomotive pipette shall have no air leakage phenomenon in 5 seconds.6 Metrological measuring tool controlMetrological measuring tool control includes initial verification, subsequent verification and in-service inspection. 7.1 Verification conditions 7.1.1 Verification environment The locomotive pipette shall be verified under the condition at (20±5)°C of room temperature, and the change of room temperature is not larger than 1°C/h. 7.3 Verification method 7.3.1 Appearance inspection Observe the locomotive pipette to verify through eye-inspection, touching or magnifying glass; the appearance shall meet the requirements of 6.1. 7.3.2 Air-tightness inspection 7.3.3 Volume verification Adopt measurement method to verify the locomotive pipette. 7.3.3.1 Preparation before verification The selected aspirating-nozzle shall match with the aspirating-rod. At the lower end of the aspirating-rod of locomotive pipette, gently turn the aspirating-nozzle to ensue the air- tightness of locomotive pipette; there shall be no hanging-water phenomena after the process of several times of aspirating and discharging. 7.3.4 Data processing 7.3.4.1 Calculation of the actual volume of locomotive pipette Substitute the mass value, temperature value, and air density value measured by implementing 7.3.3.2(1) ~ (5) into the following equation; the actual volume of the locomotive pipette at the standard temperature, 20°C, can be obtained. Where. JJG 646-2006 JJG National Metrological Verification Regulation of the People's Republic of China Locomotive Pipette Issued on. DECEMBER 08, 2006 Implemented on. JUNE 08, 2007 Issued by. The State Administration of Quality Supervision, Inspection and Quarantine This Regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China on December 8, 2006 and was implemented on June 8, 2007. Jurisdiction organization. National Technical Committee of Flow Capacity Measurement Main drafting organization. National Institute of Metrology Participating organization. Shanghai Institute of Measurement and Testing Technology National Technical Committee of Flow Capacity Measurement is responsible for the interpretation of this Regulation Main drafter of this Regulation. Verification Regulation of Locomotive Pipette replacing JJG 646-1990 Zhang Long (National Institute of Metrology Science) Participating drafters. Tong Lin (National Institute of Metrology Science) Bao Xuesong (National Institute of Metrology Science) Zhang Hongya (Shanghai Institute of Measurement and Metrology Technology)Table of Contents1 Scope... 5 2 Cited reference... 5 3 Terms and measurement units... 5 4 Overview... 6 5 Metrological properties requirements... 6 6 General technical requirements... 8 6.1 Appearance requirements... 8 6.2 Piston... 8 6.3 Regulator... 8 6.4 Aspirating-nozzle... 8 6.5 Air-tightness... 8 6 Metrological measuring tool control... 8 7.1 Verification conditions... 8 7.2 Verification items... 9 7.3 Verification method... 9 7.4 Verification results processing... 13 7.5 Verification period... 13 Annex A Schematic diagrams for various locomotive pipettes... 14 Annex B K(t) value table... 17 Annex C Recording format of locomotive pipette verification... 18 Verification Regulation of Locomotive Pipette1 ScopeThis Regulation applies to the initial verification, subsequent verification and in-service inspection of locomotive pipette.2 Cited referenceThis Regulation cites the following document. GB 6682-1992 Water for analytical laboratory use – Specification and test methods Pay attention to use the current valid version of the above cited reference in using this Regulation.3 Terms and measurement units3.1 Locomotive pipette Measuring instrument with a certain scale range that can suck the liquid from container and transfer it into another container (Filling injector, sample-filling storage, aspirator etc. collectively referred to as locomotive pipettes). 3.2 Adjustable locomotive pipette Locomotive pipette whose volume value can be adjusted. 3.3 Quantitative locomotive pipette Locomotive pipette with single volume value. 3.4 Aspirating-nozzle The part installed on the lower end of locomotive pipette and used to suck and discharge liquid. 3.5 Display window The window on locomotive pipette displaying volume value. 3.6 Suction tube The connecting member between locomotive pipette and aspirating-nozzle.4 OverviewLocomotive pipettes are mainly used in environmental protection, medicine, food and health research department, and other departments to sample liquid or add liquid in biochemical analysis and assays. It is a piston pipette working with the principle of air discharge and determining the volume of the locomotive pipette through the moving distance of piston in piston sleeve.5 Metrological properties requirementsAt the standard temperature 20°C, the volume permissible tolerance and measurement repeatability of the locomotive pipette shall meet the requirements in Table 1.6 General technical requirements6.1 Appearance requirements 6.2 Piston The piston of locomotive pipette shall be able to move up and down flexibly with clear sub- block boundaries when being pressed. 6.3 Regulator The display window of locomotive pipette shall be flexible in rotation with clear and complete indicating numbers in the action of regulating volume. 6.4 Aspirating-nozzle 6.5 Air-tightness Under 0.04 MPa, the locomotive pipette shall have no air leakage phenomenon in 5 seconds.6 Metrological measuring tool controlMetrological measuring tool control includes initial verification, subsequent verification and in-service inspection. 7.1 Verification conditions 7.1.1 Verification environment The locomotive pipette shall be verified under the condition at (20±5)°C of room temperature, and the change of room temperature is not larger than 1°C/h. 7.3 Verification method 7.3.1 Appearance inspection Observe the locomotive pipette to verify through eye-inspection, touching or magnifying glass; the appearance shall meet the requirements of 6.1. 7.3.2 Air-tightness inspection 7.3.3 Volume verification Adopt measurement method to verify the locomotive pipette. 7.3.3.1 Preparation before verification The selected aspirating-nozzle shall match with the aspirating-rod. At the lower end of the aspirating-rod of locomotive pipette, gently turn the aspirating-nozzle to ensue the air- tightness of locomotive pipette; there shall be no hanging-water phenomena after the process of several times of aspirating and discharging. 7.3.4 Data processing 7.3.4.1 Calculation of the actual volume of locomotive pipette Substitute the mass value, temperature value, and air density value measured by implementing 7.3.3.2(1) ~ (5) into the following equation; the actual volume of the locomotive pipette at the standard temperature, 20°C, can be obtained. Where. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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